Are you using lead-free solder? Your joints look well-formed, but have a 'frosty' surface. With 60/40 Lead/Tin solder, that would be one indication of a cold joint. But lead-free solder always looks that way. Does the board work? Do you see any LEDs flashing when you power it up?

How are you powering it? Make sure you have the jumper in the right position. If you are powering via the FTDI cable, make sure you have that oriented properly (it is possible to plug it in backwards).

To be clear, I'm only at the point of powering from the battery. I've put the jumper in similar to your photo above. I'm using a 9V battery and the multimeter shows the voltage you'd expect. Since it's only partially, I didn't try using my FTDI+ friends (switching the jumper, of course)